A very good question and one I cannot truly answer.

We have the Optimus Terra Lite HE cookset. From what we read it seemed that hard-anodized aluminum was safe.

I also use a large aluminum pot to brew beer. From what I read boiling water added a grey layer of oxide. This is visibly noted. How effective it may be is controversial.

We didn't feel the concerns with an aluminum camping cook set was a big issue as we wouldn't use it often (up to once a month at best).